译林版（2019）必修第三册Unit2 Natural disasters Welcome to the unit课件(共14张PPT，内镶嵌视频)

(共14张PPT)
Welcome to the unit
Unit 2 Natural disasters
Nature is kind of a loving mother, but also a butcher in cold blood.
(大自然是慈爱的母亲， 也是冷血的屠夫 )
-Victor Hugo
plant species
Gift
natural scenes
fruit species
animal species
tsunami
flood
earthquake
volcano eruption
avalanche/snowslide
hurricane
mudslide
typhoon
landslide
tornado
sandstorm
wildfire
drought
Disaster
What natural disaster in history have you heard about How are these place now
An 8.0 magnitude earthquake hit Sichuan on 2008, May ,12th.
380 killed or disappeared in heavy rain in China’s Zhengzhou in 2021.
A forest fire happened in southwest China’s Sichuan in 2019,killing 30 firefighters.
We Chinese work hand in hand to rebuild our planet!
2008 Wenchuan
earthquake in China
2008 Wenchuan earthquake in China
The earthquake struck China’s Sichuan Province on May 12, 2008. The earthquake was measured at 7.9 on Richter scale and killed about 87,000 people. It left millions of people homeless. Thousands of them were buried under the rubble of crushed communities. Factories, schools, homes were collapsed and it took troops and rescue teams significant amounts of effort to reach areas of southwestern China.
Plates moving underground can cause an earthquake, which is __________________ of the earth’s surface.
When a volcano erupts, ___________, volcanic ash and even rocks escape through a large opening at the top.
A large amount of __________________ falling down a hill or mountain is called a landslide.
Welcome to the Unit
a sudden shaking
hot gases
earth and rock
How many small earthquakes happen every year
Several million small earthquakes.
What can the volcanic gas and ash cause
They can cause acid rain and even storms.
3. What are landslides often caused by
Heavy rainfall, earthquakes, volcanic eruptions or other natural disasters. Sometimes human activities such as cutting down forests can also cause landslides.
Thinking
Earthquake
plate n.板块
surface n.表面
volcano
erupt v.爆发
ash n.灰
escape v.逃离
landslide
fall down 倒塌
hill n.山丘
Try to use your words to explain why or how it happened
What might the natural disasters bring to people
Some people might be killed.
Disease might spread.
The local economy might be badly affected.
Huge food and water shortages might be caused.
Many roads and other infrastructure(基础设施) might be destroyed.
Thinking
What should we do when natural disasters hit
Calm down.
Conserve energy and call for help.
Keep away from dangerous substances (power lines, trees, etc.).
Find evacuation(疏散) routes.
Focus on our most basic needs (shelter, water, air, food, security, sleep, medical care, etc.).
Discussion
“Those who destroy the environment will eventually be punished by nature.”